In this post, you’ll learn more about the Oracle ErrorORA-15405: Slot string in Oracle ASM appliance ‘string’ contains more than one disk with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-15405: Slot string in Oracle ASM appliance ‘string’ contains more than one disk
Reason for the Error ORA-15405: Slot string in Oracle ASM appliance ‘string’ contains more than one disk
An attempt was made to add a disk to a slot in the ASM appliance that already had a disk (possibly OFFLINE) associated with it.
How to fix the Error ORA-15405: Slot string in Oracle ASM appliance ‘string’ contains more than one disk ?
You can fix this error in Oracle by following the below steps
Use FORCE to drop the disk that exists in the specified slot. Then, retry the operation.